A MONOGRAPH OF THE EXISTING CRINOIDS 339 



7. The cirri are XXXII, 21, 20 mm. long. The arms are 105 mm. long. The 

 carination of the brachials is medium. The pinnules are moderately stiff. 



8. The cirri are XXIV, 21, 16 mm. long. The arms are 90 mm. long. The 

 carination of the brachials is medium. The pinnules are moderately stiff. 



9. The cirri are XXVI, 20, 19 mm. long. The arms are 105 mm. long. The 

 carination of the brachials is slight. The pinnules are stiff. 



10. The cirri are XXII, 22, 18 mm. long. The arms are 75 mm. long. The 

 carination of the brachials is slight. The pinnules are stiff. 



11. The cirri are XXIV, 20, 16 mm. long. The arms are 80 mm. long. The 

 carination of the brachials is slight. The pinnules are only slightly stiffened. 



Of these specimens four lack any suggestion of a third row of cirri on the centro- 

 dorsal. The color in alcohol is mostly darker or lighter purple red brown with yellow 

 spots along the sides of the arms, or dark purple without spots. Two specimens are 

 entirely light brownish. 



The specimen from Ceylon in the Colombo Museum has the cirri XXV, 22-23, 

 about 20 mm. long. The middle and distal segments are 1 mm. long, 1 mm. broad, 

 and from 1.5 to 1.75 mm. thick. The centrodorsal is thick and discoidal, 7-8 mm. 

 across, with the cirri arranged in one and a partial second marginal row. The arms 

 are stout at the base, rather abruptly attenuate from near the middle, probably 

 about 60 mm. long, but none is complete. The brachials are very low, less than 1 

 mm. long, even when the distal margin measures 4.5 mm. Near the base of the arm 

 there are 14 brachials (including two syzygial elements) in 10 mm.; beyond the middle 

 there are 18 or 19 brachials (including two syzygial elements) to 10 mm. The distal 

 margin of the basal brachials is very uneven and irregular, slightly flaring, and not 

 at ah 1 serrate or spiny. There are at least three evident projections, the largest near 

 the base of the pinnule but separated from it by a reentrant curve, the smallest on 

 the other side of the brachial, and the third median in position. This third projection 

 becomes increasingly conspicuous on each succeeding brachial, until at the middle 

 of the arm it is a rough projecting knot or rounded tooth. Distally it gradually 

 decreases hi size and disappears. The pinnules are much as in T. encrinus [=clarki], 

 but the two basal segments of the middle pinnules are conspicuously larger than the 

 segments succeeding, and rather abruptly so. These two segments are much broader 

 than long. The color is light brownish white without markings of any sort. 



Dr. Hubert Lyman Clark, whose notes are quoted above, said that comparison 

 between this specimen and typical specimens of carinata and encrinus [=clarki] 

 shows that it is neither of those species. Nor does it seem to be any nearer indica, 

 so far as the author's fragmentary references to that species show; but as the author 

 examined the specimen and assured him that it was indica he refrained from giving 

 it another name. But he decided to let the description he had drawn up stand. 

 There are no data with the specimen. 



In the specimen from the "Indian Ocean" in the Leyden Museum the cirri are 

 XV, 18-22, comparatively weak and slender; the cirrus segments are all subequal, 

 all slightly broader than long, the last four tapering slightly; the brachial carination 

 is moderate. It appears to belong to this form. 



Localities. Neendakara Bar, Travancore State; Drs. H. S. Rao and M. Sharif, 

 February 1928 [A. H. Clark, 1932] (1, I. M.). 



